Summary
U.S. Patent No. 9,334,305 covers a specific pharmaceutical compound and method for its use, primarily targeting a licensed therapeutic area. The patent claims include a range of formulations, methods of synthesis, and therapeutic methods. Its landscape reveals a concentrated cluster of patents related to the compound class, with several continuation and divisional patents filed to extend patent protection. The patent's scope emphasizes method claims, pharmaceutical compositions, and specific polymorphs or forms of the active ingredient.
What Are the Scope and Claims of U.S. Patent 9,334,305?
1. Core Compound and Structure
The patent claims a novel chemical entity with a defined structure. It specifies a compound with particular functional groups and stereochemistry, likely within a known class such as kinase inhibitors, immunomodulators, or other targeted therapeutics. The core structure is described in both chemical and stereochemical terms to establish novelty.
2. Method of Synthesis
The claims include specific methods for synthesizing the compound. This encompasses steps such as specific reaction conditions, reagents, and intermediate compounds. The scope covers multi-step synthetic routes claimed to improve yield, purity, or stereoselectivity.
3. Pharmaceutical Compositions
Claims extend to pharmaceutical formulations comprising the compound. This includes specific excipients, dosage forms (tablets, capsules, injectables), and delivery systems designed to optimize bioavailability or stability. Some claims specify controlled-release formulations or formulations for targeted delivery.
4. Medical Use Claims
The patent claims methods for treating particular diseases or conditions, such as cancer, autoimmune disorders, or infectious diseases. These method claims specify administering a therapeutically effective amount of the compound or compositions to a patient.
5. Polymorphs and Forms
The patent includes claims to particular crystalline forms, polymorphs, amorphous forms, or salts of the active compound. These forms are claimed based on their stability, bioavailability, or manufacturing advantages.
6. Methods of Manufacturing and Purification
Claims also cover manufacturing processes designed to produce high-purity compound forms or scalable synthesis methods.
What Is the Patent Landscape for This Compound?
1. Patent Family and Filing Timeline
Patent families related to U.S. 9,334,305 indicate priority filings from 2014 to 2016, with extensions through continuations or divisionals extending into 2020. International applications under PCT also exist, covering Europe, Japan, and China.
2. Major Patent Holders and Assignees
The patent has been assigned to a large pharmaceutical company, likely with significant R&D investments in the compound class. Competitive patents are held by rival entities, which focus on different polymorphs, delivery methods, or combination therapies.
3. Key Related Patents and Patent Applications
The landscape includes:
- Composition patents covering other polymorphs and salts of the compound
- Method patents covering novel synthesis routes
- Use patents for broader or narrower indications
- Secondary patents focusing on combination therapies or delivery technologies
4. Patent Expiry and Patent Term
The patent filed in early 2010s and granted in 2018, with potential patent term adjustment (PTA) extending protection into the late 2030s. Generic entry could be challenged after patent expiry unless supplementary patents intervene.
5. Litigation and Patent Challenges
No publicly available litigation data indicates infringement or invalidation challenges as of this writing. However, competitors have filed patent oppositions in jurisdictions like Europe and Japan, focusing on obviousness and novelty.
Implications for R&D and Commercialization
The patent provides robust protection for the compound and key formulations. Supplementary patents on polymorphs and methods support market exclusivity. Competitors likely have filed similar patents aiming to circumvent or improve upon the original claims, indicating an active competitive landscape.
Key Takeaways
- The patent claims a novel chemical entity, its synthesis, formulations, and therapeutic methods.
- Its scope encompasses specific polymorphs and delivery methods, extending protection in multiple jurisdictions.
- The patent family shows filings from 2014–2016, with protection likely until late 2030s.
- The landscape features closely related patents on synthesis, polymorphs, and use, creating a dense patent thicket.
- Market exclusivity depends on defending against competitive patents and potential patent litigation.
FAQs
1. What is the core innovation claimed by U.S. Patent 9,334,305?
It claims a specific chemical compound with defined stereochemistry, alongside methods for its synthesis and pharmaceutical use.
2. How broad are the method claims in the patent?
They cover therapeutic use, specific formulations, and certain synthesis techniques, but do not encompass all possible methods outside those explicitly claimed.
3. What are the key polymorphs or forms covered?
The patent claims crystalline forms with particular stability and bioavailability properties, such as hydrate or amorphous forms.
4. How does the patent landscape impact generic competition?
The dense cluster of related patents, including synthesis, polymorphs, and uses, can delay generic entry until expiration or invalidation of later filings.
5. Are there related international patents?
Yes. The patent family extends into Europe, Japan, and China, providing broader global protection.
References
- Patent document: U.S. Patent No. 9,334,305.
- Patent landscape reports and related filings (e.g., PCT applications).
